cgroup-lite not installable inside 'lxc create -t ubuntu' container

Inside a cgroup created by juju (with 'lxc create -t ubuntu'), libvirt-bin was attempted to be installed.

libvirt-bin depends on cgroup-lite (or cgroup-bin) and cgroup-lite tries to be installed:

# sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up cgroup-lite (1.0) ...
start: Job failed to start
invoke-rc.d: initscript cgroup-lite, action "start" failed.
dpkg: error processing cgroup-lite (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of libvirt-bin:
 libvirt-bin depends on cgroup-lite | cgroup-bin; however:
  Package cgroup-lite is not configured yet.
  Package cgroup-bin is not installed.
dpkg: error processing libvirt-bin (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          Errors were encountered while processing:
 cgroup-lite
 libvirt-bin
E: Sub-process /usr/bin/dpkg returned an error code (1)

# cgroups-mount
mkdir: cannot create directory `/sys/fs/cgroup/cpuset': Permission denied

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: cgroup-lite 1.0
ProcVersionSignature: User Name 3.2.0-12.20-virtual 3.2.2
Uname: Linux 3.2.0-12-virtual x86_64
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
Date: Tue Jan 31 13:06:20 2012
Dependencies:

Ec2AMI: ami-00000132
Ec2AMIManifest: FIXME
Ec2AvailabilityZone: nova
Ec2InstanceType: m1.small
Ec2Kernel: unavailable
Ec2Ramdisk: unavailable
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: cgroup-lite
UpgradeStatus: No upgrade log present (probably fresh install)